Method for producing and manufacturing tensile and tear-resistant knitted fabric

Abstract

The invention relates to the technical field of textile, and particularly discloses a stretch-resistant and tear-resistant knitted fabric production and manufacturing method which comprises the following steps: transmitting related data of a knitted fabric sample to a central control system and producing yarns; knitting the knitted fabric by adopting the produced yarns according to the obtained weaving and knitting data through a knitting system to form gray cloth; carrying out dyeing and shaping treatment on the knitted fabric fuel prepared by the dyeing equipment according to the pigment proportion data; the dyed knitted fabric is sampled and scanned by a scanning device, and it is ensured that color parameter data of the knitted fabric and the scanning device are consistent; the dyed knitted fabric is subjected to a tensile and tear-resistant experiment, so that the tensile and tear-resistant properties are ensured, the recarving of the knitted fabric sample is realized, and the tensile and tear-resistant properties are realized.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular discloses a method for producing a stretch-resistant and tear-resistant knitted fabric. Background Art

[0002] Knitted fabrics are made by knitting yarns into loops and interlacing them with knitting needles. They are categorized into warp knitted fabrics and weft knitted fabrics. Knitted fabrics are soft, breathable, and moisture-wicking, while also retaining warmth. Most knitted fabrics possess excellent elasticity and stretchability. Compared to woven fabrics, they offer high production yields and are suitable for small-batch production. Knitted garments are comfortable, form-fitting, and seamless, perfectly reflecting the body's curves.

[0003] With the widespread demand for textile materials in sportswear, outdoor equipment and high-intensity industrial applications, traditional knitted fabrics have the problem of being unable to produce fabrics with the same data parameters according to samples provided by users. Therefore, a method for producing stretch-resistant and tear-resistant knitted fabrics is provided to solve the above problem. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the present invention aims to provide a method for producing a stretch-resistant and tear-resistant knitted fabric.

[0005] To achieve the above-mentioned object, a method for producing a stretch-resistant and tear-resistant knitted fabric of the present invention comprises the following steps:

[0006] S1: Transmit the knitting data, color parameter data, and comfort data of the knitted fabric sample to the central control system, and simultaneously produce yarn that can meet the corresponding data parameters;

[0007] S2: The central control system controls the knitting system to weave the knitted fabric. The knitting system uses the produced yarn to weave the knitted fabric according to the acquired knitting data to form the grey fabric.

[0008] S3: The knitting data of the sampled grey fabric is obtained through a scanning device and uploaded to the central control system, and the knitting data is analyzed and compared with the sample knitting data by the central control system to ensure the consistency of the knitting data;

[0009] S4: The qualified grey cloth woven by the weaving system is dyed and finalized according to the knitted fabric dye configured with the pigment ratio data by the dyeing equipment;

[0010] S5: The knitted fabric after dyeing is sampled and scanned by a scanning device, and the color parameter data of the scanned knitted fabric is compared and analyzed with the color parameter data of the knitted fabric sample to ensure that the color parameter data of the two are consistent within a certain error range;

[0011] S6: Conduct stretch and tear resistance tests on the dyed knitted fabric to ensure its stretch and tear resistance performance;

[0012] S7: Printing is performed on the knitted fabric that has passed the tensile and tearing resistance tests to obtain a finished fabric.

[0013] Preferably, the yarn in S1 is a composite yarn, which consists of a high-strength fiber core wire and an outer covering of low-elasticity fiber. The strength of the high-strength fiber core wire is 3-5cN / dtex, and the elongation at break of the low-elasticity fiber is 15%-25%; a first sample wire and a low-melting-point fiber wire are wound around the low-elasticity fiber. Through a combination of fibers with specific structures and properties, the high-strength fiber core wire provides a strength basis, the low-elasticity fiber imparts a certain elasticity, the first sample wire ensures performance consistency, and the low-melting-point fiber wire facilitates subsequent processing, thereby achieving a yarn with high strength, appropriate elasticity and good processing performance, meeting the requirements of knitted fabrics for yarn performance.

[0014] Preferably, the first sample yarn and the low-melting point fiber yarn are twisted into a first composite yarn, the twist of the first composite yarn is 80-120 twists / 10cm, the first composite yarn is wound on the low-elasticity fiber to form a second composite yarn, and then the second composite yarn is wound on the high-strength fiber core yarn. Through reasonable twist and winding method, different fibers are closely combined to give play to their respective advantages, thereby achieving a stable composite yarn structure and synergistic performance of each fiber, further improving the overall performance of the yarn, and laying the foundation for weaving high-quality knitted fabrics.

[0015] Preferably, the first sample silk is the same as the silk of the part of the knitted fabric sample that contacts the outside world or has equivalent performance parameters to ensure the performance consistency of the woven fabric, ensure that the performance matches the knitted fabric sample from the yarn source, and achieve the consistency of the woven fabric in performance with the sample, reduce the fluctuation of fabric performance caused by yarn differences, and improve the stability of product quality.

[0016] Preferably, the yarn in S1 needs to be heat treated, and the heat treatment temperature is higher than the melting point of the low-melting-point fiber. The heat-treated yarn is woven into a grey cloth through a weaving system. The low-melting-point fiber is melted by heat treatment, and other fibers are bonded and fixed, thereby enhancing the stability of the yarn structure, ensuring that the yarn is not easy to loosen or deform during the weaving process, thereby improving the quality of the grey cloth and the weaving efficiency.

[0017] Preferably, the dyeing in S3 includes a multi-stage temperature rising dyeing process, and the temperature rising stage includes at least three stages, the temperature of the first stage is 40-50°C, and the holding time is 10-15 minutes; the temperature of the second stage is 60-70°C, and the holding time is 20-25 minutes; the temperature of the third stage is 80-90°C, and the holding time is 30-35 minutes; and between each temperature rising stage, a transition time of 5-10 minutes is set to make the temperature transition smoothly. The melting point of the low-melting point fiber is not less than 90°C. By setting the staged temperature rising and transition time, the dye is gradually penetrated and fixed at different temperatures, avoiding the adverse effects of sudden temperature changes on the fabric and the dye, achieving uniform dyeing and bright colors, while ensuring that the low-melting point fiber is not damaged, and improving the dyeing quality and fabric performance.

[0018] Preferably, the manufacturing method further comprises low-temperature plasma treatment, which is performed before the dyeing step. The processing parameters of the low-temperature plasma treatment technology are as follows: the processing gas is a mixed gas of oxygen, nitrogen and argon, wherein oxygen accounts for 10%-20%, nitrogen accounts for 30%-40%, and argon accounts for 40%-60%; the processing power is 50-100W; the processing time is 5-10 minutes; and the processing temperature is room temperature;

[0019] Radio frequency plasma equipment (frequency 13.56MHz) is used to ensure a uniform and stable plasma field, control the moisture content of the grey cloth to ≤3%, avoid unstable plasma discharge, and complete dyeing within 24 hours after plasma treatment. Through low-temperature plasma treatment with specific parameters, the surface properties of the grey cloth are improved, the dye adsorption capacity is enhanced, and the treatment process is stable, achieving better subsequent dyeing effects, stronger colors, and improved dyeing efficiency and quality.

[0020] Preferably, before the dyeing and setting treatment in step S3, the grey cloth is pretreated, and the pretreatment includes soaking the grey cloth in an aqueous solution containing nano-titanium dioxide particles and an antistatic agent for 20-30 minutes, and then taking it out and drying it; the particle size of the nano-titanium dioxide particles is 20-50nm, and the antistatic agent is fatty alcohol polyoxyethylene ether ammonium sulfate. The nano-titanium dioxide particles give the grey cloth antibacterial, self-cleaning and other functions, and the antistatic agent eliminates static electricity, thereby improving the performance of the grey cloth, so that the dyed cloth has more functionality and comfort, meeting the market demand for multifunctional knitted fabrics.

[0021] Preferably, in step S3, the dyeing and setting treatment also includes ultrasonic-assisted dyeing technology, and an ultrasonic generator is set in the dyeing tank, the ultrasonic frequency is 20-50kHz, and the power is 100-300W; the dyeing tank is also provided with rollers arranged on the upper and lower sides of the grey cloth, and the rollers are rotated relative to the dyeing tank and slid relative to the dyeing tank. During the dyeing process, the cavitation effect and mechanical stirring effect generated by the ultrasonic wave are used to accelerate the diffusion and penetration of the dye, so that the dye is more evenly attached to the grey cloth fibers, and at the same time shorten the dyeing time by 10%-20%, thereby improving the dyeing efficiency and quality. The cavitation effect and mechanical stirring effect of the ultrasonic wave are used to promote the full contact and combination of the dye and the grey cloth fibers, thereby achieving uniform and rapid dyeing, improving the dyeing efficiency and quality, and reducing production costs.

[0022] Preferably, the finished cloth is subjected to performance tests, including tensile performance test, tear resistance test, color comparison test and fabric density test; the tensile performance test adopts a universal material testing machine with a tensile speed of 100 mm / min; the tear resistance test adopts a single tongue tearing test with a tearing speed of 50 mm / min; the color Lab value (error ΔE≤1.5) and fabric density value (error ±2%) are compared according to standards. Through strict performance tests, the various performance indicators of the finished cloth are accurately evaluated, thereby achieving effective monitoring of product quality, ensuring that the product meets relevant standards and customer requirements, and improving the market competitiveness of the product.

[0023] The beneficial effects of the present invention are as follows: the knitting data and color parameter data of the knitted fabric sample are transmitted to the central control system and the yarn is produced synchronously, providing an accurate basis and raw material guarantee for weaving, realizing efficient weaving and a design that meets the needs of users; the central control system controls the weaving system to weave the grey cloth according to the data, ensuring that the structure and color of the grey cloth meet the standards and improves product quality; the grey cloth is dyed and shaped according to the pigment ratio to make the cloth color uniform and the size stable; the dyed cloth is scanned and compared with the sample data to ensure consistent dyeing quality; tensile and tear resistance tests are carried out to detect and optimize the cloth performance; finally, the qualified cloth is printed to make the finished cloth, taking into account both performance and aesthetics, enhancing product competitiveness, realizing the replication of the knitted cloth sample and achieving tensile and tear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the manufacturing process of the present invention;

[0025] Figure 2 Schematic diagram of the yarn structure of the present invention;

[0026] Figure 3 is a schematic structural diagram of the second composite yarn of the present invention;

[0027] Figure 4It is a schematic flow chart of the yarn production method of the present invention. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0029] See also Figures 1 to 4 As shown, a method for producing a stretch-resistant and tear-resistant knitted fabric of the present invention comprises the following steps:

[0030] S1: Transmit the knitting data, color parameter data, and comfort data of the knitted fabric sample to the central control system, and simultaneously produce yarn that can meet the corresponding data parameters;

[0031] S2: The central control system controls the knitting system to weave the knitted fabric. The knitting system uses the produced yarn to weave the knitted fabric according to the acquired knitting data to form the grey fabric.

[0032] S3: The knitting data of the sampled grey fabric is obtained through a scanning device and uploaded to the central control system, and the knitting data is analyzed and compared with the sample knitting data by the central control system to ensure the consistency of the knitting data;

[0033] S4: The qualified grey cloth woven by the weaving system is dyed and finalized according to the knitted fabric dye configured with the pigment ratio data by the dyeing equipment;

[0034] S5: The knitted fabric after dyeing is sampled and scanned by a scanning device, and the color parameter data of the scanned knitted fabric is compared and analyzed with the color parameter data of the knitted fabric sample to ensure that the color parameter data of the two are consistent within a certain error range;

[0035] S6: Conduct stretch and tear resistance tests on the dyed knitted fabric to ensure its stretch and tear resistance performance;

[0036] S7: Printing is performed on the knitted fabric that has passed the tensile and tearing resistance tests to obtain a finished fabric.

[0037] Specifically, the knitting data and color parameter data of the knitted fabric samples are transmitted to the central control system and yarn is produced synchronously, providing an accurate basis and raw material guarantee for weaving, realizing efficient weaving and meeting the design requirements of users; the central control system controls the weaving system to weave the grey cloth according to the data, ensuring that the structure and color of the grey cloth meet the standards and improve product quality; the grey cloth is dyed and shaped according to the pigment ratio to make the cloth color uniform and the size stable; the dyed cloth is scanned and compared with the sample data to ensure consistent dyeing quality; tensile and tear resistance tests are carried out to detect and optimize the cloth performance; finally, the qualified cloth is printed to make the finished cloth, taking into account both performance and aesthetics, and enhancing product competitiveness.

[0038] Specifically, the needle bed included in the weaving system is composed of multiple independently controlled electromagnetic pin modules. Each module contains 10 trapezoidal cross-section needle bars, and rare earth permanent magnets are embedded at the bottom of the needle bars. A linear Hall sensor array is set at the base of the needle bed with a sensor spacing of 5mm to provide real-time feedback on the needle bar position. The central control system adjusts the needle bar spacing (adjustment accuracy 0.01mm) through the electromagnetic coil current according to the fabric density requirements. The Hall sensor detection data is compared with the weaving data model to automatically correct the needle pitch deviation.

[0039] Specifically, a three-stage tension compensation mechanism is installed between the creel and the weaving area: the first stage: a hydraulic damping tensioner filled with silicone oil; the second stage: an electromagnetic eddy current brake with an adjustable braking torque of 0-5Nm; and the third stage: a dancing arm tension sensor with an arm length of 300mm and an adjustable end weight. The three stages are arranged in series, with the hydraulic damper absorbing yarn vibrations, the electromagnetic brake providing base tension, and the dancing arm providing real-time tension feedback (sampling frequency 1kHz). The central control system automatically matches the tension curve according to the yarn type (e.g., the core tension of high-strength fiber is set to 8cN, and that of low-elasticity fiber is set to 5cN).

[0040] Specifically, comfort data includes air permeability, moisture absorption, surface roughness, touch coolness, softness, etc. The yarn ratio can be adjusted according to the comfort requirements (such as increasing the proportion of natural fibers) or functional fibers (such as Modal, bamboo fiber) can be selected.

[0041] Specifically, the air permeability is achieved by using hollow fibers or special-shaped cross-section fibers to increase the internal porosity of the yarn, and the softness is achieved by adding a softener during the soaking pretreatment stage.

[0042] Specifically, the comfort-related data is mainly processed for the first sample yarn / second composite yarn.

[0043] Specifically, the yarn in S1 is a composite yarn, which is composed of a high-strength fiber core wire and an outer covering of low-elasticity fiber. The strength of the high-strength fiber core wire is 3-5cN / dtex, and the elongation at break of the low-elasticity fiber is 15%-25%; a first sample wire and a low-melting point fiber wire are wound on the low-elasticity fiber. Through a combination of fibers with specific structures and properties, the high-strength fiber core wire provides a strength basis, the low-elasticity fiber imparts a certain elasticity, the first sample wire ensures performance consistency, and the low-melting point fiber wire facilitates subsequent processing, thereby achieving a yarn with high strength, appropriate elasticity and good processing performance, meeting the requirements of knitted fabrics for yarn performance.

[0044] Specifically, the first sample yarn and the low-melting point fiber yarn are twisted into a first composite yarn, the twist of the first composite yarn is 80-120 twists / 10cm, the first composite yarn is wound on the low-elasticity fiber to form a second composite yarn, and then the second composite yarn is wound on the high-strength fiber core yarn. Through reasonable twist and winding method, different fibers are closely combined to give play to their respective advantages, thereby achieving a stable composite yarn structure and synergistic performance of each fiber, further improving the overall performance of the yarn, and laying the foundation for weaving high-quality knitted fabrics.

[0045] Specifically, the first sample silk is the same as the silk of the part of the knitted fabric sample that contacts the outside world or has equivalent performance parameters to ensure the performance consistency of the woven fabric, ensure that the performance matches the knitted fabric sample from the yarn source, and achieve the consistency of the woven fabric in performance with the sample, reduce the fluctuation of fabric performance caused by yarn differences, and improve the stability of product quality.

[0046] Specifically, the yarn in S1 needs to be heat treated, and the heat treatment temperature is higher than the melting point of the low-melting-point fiber. The heat-treated yarn is woven into a grey cloth through a weaving system. The low-melting-point fiber is melted by heat treatment, and other fibers are bonded and fixed to enhance the stability of the yarn structure. This ensures that the yarn is not easy to loosen or deform during the weaving process, thereby improving the quality of the grey cloth and the weaving efficiency.

[0047] Specifically, the dyeing in S3 includes a multi-stage temperature rising dyeing process. The temperature rising stage includes at least three stages. The temperature of the first stage is 40-50℃, and the holding time is 10-15 minutes; the temperature of the second stage is 60-70℃, and the holding time is 20-25 minutes; the temperature of the third stage is 80-90℃, and the holding time is 30-35 minutes; and between each temperature rising stage, a transition time of 5-10 minutes is set to make the temperature transition smoothly. The melting point of the low-melting-point fiber is not less than 90℃. Through the staged temperature rising and transition time setting, the dye is gradually penetrated and fixed at different temperatures, avoiding the adverse effects of sudden temperature changes on the fabric and the dye, achieving uniform dyeing and bright colors, while ensuring that the low-melting-point fiber is not damaged, and improving the dyeing quality and fabric performance.

[0048] Specifically, the pigment ratio data is analyzed by the central control system or imported from the outside.

[0049] Specifically, the manufacturing method further includes low-temperature plasma treatment, which is performed before the dyeing step. The processing parameters of the low-temperature plasma treatment technology are as follows: the processing gas is a mixture of oxygen, nitrogen and argon, wherein oxygen accounts for 10%-20%, nitrogen accounts for 30%-40%, and argon accounts for 40%-60%; the processing power is 50-100W; the processing time is 5-10 minutes; and the processing temperature is room temperature;

[0050] Radio frequency plasma equipment (frequency 13.56MHz) is used to ensure a uniform and stable plasma field, control the moisture content of the grey cloth to ≤3%, avoid unstable plasma discharge, and complete dyeing within 24 hours after plasma treatment. Through low-temperature plasma treatment with specific parameters, the surface properties of the grey cloth are improved, the dye adsorption capacity is enhanced, and the treatment process is stable, achieving better subsequent dyeing effects, stronger colors, and improved dyeing efficiency and quality.

[0051] Specifically, the second embodiment adopts a dual-rotating electrode design. The upper electrode is a copper roller with a diameter of 300mm, and the lower electrode is a silicone crawler electrode. The distance between the two electrodes is adjustable (5-20mm). An annular gas distribution disk is set in the reaction chamber. The gas distribution disk is evenly distributed with 16 laser-punched (aperture 0.5mm) gas nozzles to achieve uniform gas distribution. The rotating electrode generates an alternating electric field (frequency 10kHz) to enhance the collision energy between the plasma and the fiber surface; the gas distribution disk accurately mixes the O2 / N2 / Ar mixed gas (flow ratio 1:3:6) through the mass flow controller to ensure processing uniformity. The plasma treatment efficiency can be improved by 40% (the activation energy density per unit area reaches 0.8J / cm 2 ), the contact angle of the fiber surface is reduced to 35° (originally 60°), and the wettability is significantly improved.

[0052] Specifically, in the third embodiment, a small amount of water vapor (≤5%) is added during the plasma treatment to enhance the plasma etching effect on the fiber surface and improve hygroscopicity. The treatment power and time are: the treatment power is maintained at 50-100W, and the treatment time is 5-10 minutes.

[0053] Specifically, before the dyeing and setting treatment in step S3, the grey cloth is pretreated. The pretreatment includes soaking the grey cloth in an aqueous solution containing nano-titanium dioxide particles and an antistatic agent for 20-30 minutes, and then taking it out and drying it. The particle size of the nano-titanium dioxide particles is 20-50nm, and the antistatic agent is fatty alcohol polyoxyethylene ether ammonium sulfate. The nano-titanium dioxide particles give the grey cloth antibacterial, self-cleaning and other functions, and the antistatic agent eliminates static electricity, thereby improving the performance of the grey cloth, so that the dyed cloth has more functionality and comfort, meeting the market demand for multifunctional knitted fabrics.

[0054] Specifically, the drying process involves setting up an infrared radiation cabin in front of the hot air circulation oven. Six sets of medium-wave infrared lamps (wavelength 2-4 μm) are arranged in a V-shape with an angle of 120°. An aluminum foil heat insulation board with a reflectivity of more than 95% is installed on the cabin roof, and high-temperature resistant ceramic guide rollers are installed on the cabin bottom. The infrared lamps are controlled in three zones, with a power density of 30kW / m in the front zone. 2 Rapid heating, 20kW / m in the middle area 2 Maintain temperature, rear zone 15kW / m 2Gradient cooling: The ceramic guide roller has a built-in thermocouple to monitor the surface temperature of the grey cloth in real time (accuracy ±1°C) and adjust the infrared radiation intensity through feedback, which can shorten the setting time by 40% and reduce energy consumption by 35%.

[0055] Specifically, in other embodiments, the six groups of medium-wave infrared lamps are replaced with 12 modular groups of lamps. The power of each group is independently adjustable (0-3kW), and the lamp spacing is adjustable within a range of 50-100mm. A hyperbolic reflector replaces the flat aluminum foil, with the reflector radius of curvature matching the lamp arrangement, increasing the reflectivity to 98%. The lamp power distribution is automatically matched to the thickness of the fabric (detected by a laser thickness gauge) (thick fabric: high power in the front area / low power in the back area; thin fabric: uniform power). A heat pipe array is added on the back of the reflector to direct the radiant waste heat into the dyeing pre-treatment stage, achieving a heat recovery efficiency of over 70%.

[0056] Specifically, an active spreading roller is installed at the oven exit. The roller is composed of two curved stainless steel sections, with four sets of pneumatic struts mounted on the back of each section. Encoders are installed at both ends of the roller to detect speed differences in real time. The central control system controls the extension and retraction of the pneumatic struts (adjustable range 0-20mm) based on the width of the grey fabric (detected by a laser width gauge), dynamically adjusting the roller's curvature. The encoder data is then used in a closed-loop control with the spreading roller's speed to maintain constant warp tension in the grey fabric.

[0057] Specifically, in step S3, the dyeing and setting process also includes ultrasonic-assisted dyeing technology. An ultrasonic generator is set in the dyeing tank. The ultrasonic frequency is 20-50kHz and the power is 100-300W. The dyeing tank is also provided with rollers arranged on the upper and lower sides of the grey cloth. The rollers are rotated relative to the dyeing tank and slide relative to the dyeing tank. During the dyeing process, the cavitation effect and mechanical stirring effect generated by the ultrasonic wave are used to accelerate the diffusion and penetration of the dye, so that the dye is more evenly attached to the grey cloth fibers, while shortening the dyeing time by 10%-20%, improving the dyeing efficiency and quality, and utilizing the cavitation effect and mechanical stirring effect of the ultrasonic wave to promote full contact and combination of the dye and the grey cloth fibers, thereby achieving uniform and rapid dyeing, improving dyeing efficiency and quality, and reducing production costs.

[0058] Specifically, in the second embodiment, a double-layer spiral dye liquor conduit is arranged in the dyeing tank, the inner conduit is evenly distributed with φ2mm spray holes, and the outer conduit is wrapped with a metal wire mesh filter layer; the two layers of conduits are connected to the frequency conversion pump through a rotary joint, and a three-way valve is provided at the outlet end of the frequency conversion pump, which respectively connects the dye recovery tank and the fresh dye liquor tank. The inner conduit sprays high-speed dye liquor to impact the surface of the grey cloth (flow rate 2-3m / s), and the outer filter layer intercepts fiber lint; the three-way valve automatically switches the liquid supply source through the liquid level sensor. When the turbidity of the dye liquor is greater than 50NTU, it switches to the recovery tank, and is recycled after being treated by the membrane filtration device, which can effectively achieve efficient utilization of the dye liquor (water saving rate 42%), while avoiding uneven dyeing caused by lint deposition.

[0059] Specifically, four groups of ultrasonic vibrators are set in the dyeing tank, each group of vibrators is composed of a 20kHz piezoelectric ceramic transducer array, and the surface of the vibrator is covered with a perforated titanium alloy guide plate; liftable cloth guide rollers are installed on both sides of the vibrator, and spiral grooves are etched on the surface of the roller. The groove spacing matches the density of the grey cloth tissue, and the ultrasonic vibrators are arranged in a "sparse front and dense back" pattern. The front vibrator power of 500W is used to open the fiber pores, and the rear vibrator power of 800W is used to enhance dye penetration; the cloth guide roller is driven by a servo motor, and the lifting height is automatically adjusted according to the thickness of the grey cloth (adjustment range 0-50mm). Keeping the distance between the grey cloth and the vibrator constant can improve dyeing uniformity by 31% and reduce energy consumption by 25%.

[0060] Specifically, the finished cloth is subjected to performance tests, including tensile performance test, tear resistance test, color comparison test and fabric density test; the tensile performance test adopts a universal material testing machine with a tensile speed of 100mm / min; the tear resistance test adopts a single tongue tearing test with a tearing speed of 50mm / min; the color Lab value (error ΔE≤1.5) and fabric density value (error ±2%) are compared according to the standards. Through strict performance tests, the various performance indicators of the finished cloth are accurately evaluated, which realizes effective monitoring of product quality, ensures that the products meet relevant standards and customer requirements, and improves the market competitiveness of products.

[0061] Specifically, printing adopts digital inkjet printing technology, and the inkjet frequency and ink jet volume of the inkjet print head are dynamically adjusted according to the material, thickness and complexity of the printed pattern of the grey cloth; the reactive additive is a compound containing epoxy groups or silane coupling groups, and the reactive additive is used to chemically react with active groups such as hydroxyl groups and carboxyl groups in the grey cloth fibers to form strong chemical bonds.

[0062] Specifically, after printing in step S4, the printed pattern is subjected to quality inspection. The inspection adopts a machine vision system, and the color accuracy, pattern integrity and position accuracy of the printed pattern are inspected through an image recognition algorithm. The inspection result is compared with the preset standard. If the inspection result does not meet the preset standard, the printing process parameters are adjusted and printing is performed again.

[0063] Specifically, water-based adhesive or thermal transfer process is selected in the printing step.

[0064] Specifically, before printing in step S4, the grey cloth is subjected to plasma pretreatment, and the treatment gas is a fluorine-containing gas plasma, such as a mixed gas of sulfur hexafluoride (SF6) and octafluorocyclobutane (C4F8), the treatment time is 2-5 minutes, and the treatment power is 100-200W; this pretreatment can improve the chemical properties and roughness of the surface of the grey cloth, enhance the adhesion between the printed pattern and the grey cloth, and enable the printed knitted cloth to remain clear and complete after multiple washings.

[0065] Specifically, after the finished cloth is obtained in step S5, the finished cloth is subjected to antibacterial post-treatment, and the finished cloth is immersed in an antibacterial treatment solution containing nanosilver particles and natural antibacterial plant extracts for 30-60 minutes, and then taken out and dried at low temperature; the particle size of the nanosilver particles is 1-10nm, and the natural antibacterial plant extracts include tea tree essential oil, lavender essential oil, etc.; this antibacterial post-treatment can make the finished cloth have long-lasting antibacterial properties and effectively inhibit the growth and reproduction of bacteria.

[0066] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A method for producing a stretch-resistant and tear-resistant knitted fabric, characterized in that: The following steps are involved: S1: The knitting data and color parameter data of the knitted fabric sample are transmitted to the central control system, and the central control system controls the yarn feeding mechanism to deliver the required yarn; S2: The central control system controls the knitting system to knit the different yarns delivered by the yarn feeding mechanism into knitted fabrics. The knitting system uses the produced yarns to knit the fabrics according to the acquired knitting data to form the grey fabrics. S3: dyeing, setting, and drying the grey cloth woven by the weaving system according to the knitted fabric dye configured with the pigment ratio data through the dyeing equipment; S4: The knitted fabric after dyeing is sampled and scanned by a scanning device, and the color parameter data of the scanned knitted fabric is compared and analyzed with the color parameter data of the knitted fabric sample to ensure that the color parameter data of the two are consistent; S5: The knitted fabric after dyeing is subjected to tensile and tear resistance tests to ensure its tensile and tear resistance.

2. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 1, wherein: The yarn in S1 is a composite yarn, which consists of a high-strength fiber core wire and an outer low-elastic fiber coating. The strength of the high-strength fiber core wire is 3-5cN / dtex, and the breaking elongation of the low-elastic fiber is 15%-25%; the first sample wire and the low-melting point fiber wire are wound around the low-elastic fiber.

3. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 2, wherein: The first sample yarn and the low-melting-point fiber yarn are twisted into a first composite yarn, the twist of the first composite yarn is 80-120 twists / 10cm, the first composite yarn is wound on the low-elastic fiber to form a second composite yarn, and then the second composite yarn is wound on the high-strength fiber core yarn.

4. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 2, wherein: The first sample silk and the silk of the portion of the knitted fabric sample contacting the outside world are of the same quality or have equivalent performance parameters.

5. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 2, wherein: The yarn in S1 needs to be heat treated, and the heat treatment temperature is higher than the melting point of the low-melting-point fiber. The heat-treated yarn is woven into a grey cloth through a weaving system.

6. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 5, wherein: The dyeing in S3 includes a multi-stage temperature rising dyeing process. The temperature rising stage includes at least three stages. The temperature of the first stage is 40-50℃, and the holding time is 10-15 minutes; the temperature of the second stage is 60-70℃, and the holding time is 20-25 minutes; the temperature of the third stage is 80-90℃, and the holding time is 30-35 minutes; and between each temperature rising stage, a transition time of 5-10 minutes is set to ensure a smooth temperature transition. The melting point of the low-melting-point fiber is not less than 90℃.

7. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 1, wherein: The manufacturing method also includes low-temperature plasma treatment, which is performed before the dyeing step. The processing parameters of the low-temperature plasma treatment technology are as follows: the processing gas is a mixture of oxygen, nitrogen and argon, wherein oxygen accounts for 10%-20%, nitrogen accounts for 30%-40%, and argon accounts for 40%-60%; the processing power is 50-100W; the processing time is 5-10 minutes; and the processing temperature is room temperature; Radio frequency plasma equipment (frequency 13.56MHz) is used to ensure a uniform and stable plasma field, control the moisture content of the grey cloth to ≤3%, avoid unstable plasma discharge, and complete dyeing within 24 hours after plasma treatment.

8. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 1, wherein: Before the dyeing and setting treatment in step S3, the grey cloth is pretreated. The pretreatment includes soaking the grey cloth in an aqueous solution containing nano-titanium dioxide particles and an antistatic agent for 20-30 minutes, and then taking it out and drying it. The particle size of the nano-titanium dioxide particles is 20-50 nm, and the antistatic agent is fatty alcohol polyoxyethylene ether ammonium sulfate.

9. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 6, wherein: In step S3, the dyeing and setting process also includes ultrasonic-assisted dyeing technology. An ultrasonic generator is set in the dyeing tank. The ultrasonic frequency is 20-50kHz and the power is 100-300W. The dyeing tank is also provided with rollers arranged on the upper and lower sides of the grey cloth. The rollers are arranged to rotate relative to the dyeing tank and slide relative to the dyeing tank. During the dyeing process, the cavitation effect and mechanical stirring effect generated by the ultrasonic wave are used to accelerate the diffusion and penetration of the dye.

10. The method for producing a stretch-resistant and tear-resistant knitted fabric according to claim 1, wherein: The finished fabrics were subjected to performance tests, including tensile strength test, tear resistance test, color contrast test and fabric density test. The tensile strength test was conducted using a universal material testing machine at a stretching speed of 100 mm / min. The tear resistance test was conducted using a single-tongue tearing test at a tearing speed of 50 mm / min.

Images